Gas-lamp.



No. 722,306. PATENTED MAR. 10, 1903. A. H. HUMPHREY.

GAS LAMP.

APPLICATION FILED NOV. 3, 1902.

N0 MODEL 2 SHEETS-SHEET 14 N0. 722,306. PATEN'IED MAR. 10, 1903.

A. H. HUMPHREY.

GAS LAMP.

. APPLICATION FILED NOV. 3, 1902.

N0 MODEL.

I 2 SHEETS-SHEET 2.

Q my 0 3 Fly Q L] Witnesses:

Uninn STATES PATENT OFFICE.

ALFRED H. HUMPHREY, OF KALAMAZOO, MICHIGAN.

GAS-LAM P.

$PECIFICATION forming part of Letters Patent No. 722,306, dated March 10, 1903. Application filed November 3,1902. Serial No. 129,914. (No model.)

To all whom lit may concern:

Be it known that I, ALFRED I-I. HUMPHREY, a citizen of the United States, residing at the city of Kalamazoo, in the county of Kalamazoo and State of Michigan, have invented certain new and useful Improvements in Gas- Lamps, of which the following is a specification.

This invention relates to improvements in gas-lamps.

It relates more particularly to cluster-lamps or to lamps which have two or more burners grouped together. In such structures it is often found desirable to use but one burner and to frequently change from one to all of the burners, and vice versa.

The objects of this invention are, first, to provide in a cluster gas-lamp simple and efficient means for controlling the supply of gas to the burners, so that but one of the burners or all of the burners may be used, as may be desired; second, to provide such a structure with operating means whereby the pilotlight may be operated and the gas turned on to one or all of the burners, as may be desired, by a single pull of the operating-chain; third, to provide an efficient valve mechanism for use in such a structure; fourth, to provide a structure of the class described in which a pilot-light is used with efficient valve mechanism and means for operating the same.

Further objects will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is fully illustrated in the accompanying drawings, forming a part of this specification, in which- Figure l is an elevation view of a structure embodying the features of my invention, showing the general arrangement of the parts. Fig. 2 is an enlarged detail 'view taken on a line corresponding to line 2 2 of Fig. 1, showing the arrangement of the valve-stop. Figs. 3, 4, and 5 are detail cross-sectional views taken on a line corresponding to line 3 3 of Fig. 1, showing the valve B in varied adj ustments, the valve being shown in Fig. 3 in position to admit gas to one of the burners only. In Fig. 4the valve is shown in position to out off the gas from all of the burners, and in Fig. 5 the Valve is shown in position to supply gas to all of the burners. Fig. 6 is a detail view of a modification of the valve-stop, the stop being in this structure a spring-pin.

In the drawings the sectional views are taken looking in the direction of the little arrows at the ends of the section-lines, and similar letters of reference refer to similar parts throughout the several views.

Referring to the lettered parts of the drawings, A represents the gas-supply pipe,which in this instance also serves as a support for the lamp. A bracket or hollow central support A, from which the hollow arms a, a, and a project, is secured to the pipe A. The arms are provided with suitable burners, as D, D, and D. I insert a plug a in the inner end of the arm a, so as to close or seal the same from the chamber in the bracket A, with which the arm a, is connected.

The support or coupling A is provided with a suitable valve-seat in which is a valve B. The arm a is connected with this valve-seat by a by-pass e, so that it is connected directly with the valve. The valve B is provided with an enlarged passage adapted when in one position to deliver gas to the main passage and to the by-pass passage and when moved to another position to deliver gas to the bypass passage only. The valve B is also adapted to cut off the supply of gas to all of the burners. The valve B is provided with a suitable operating-lever B, to the ends of which are suspended operating-chains m and n. Stops b b on the lever B are adapted to contact with one of the arms (t to limit the movement of the valve. I also provide a by-pass stop for the valve-that is, a stop for the valve when it is in position to deliver gas to the by-pass only. This stop consists of a hollow plug 0, which is secured in a suitable seat in the stem of the valve B. The pin 0', which is adapted to reciprocate in said plug, is held yieldingly in position by a coiled spring 0. The pin 0 is arranged to strike the arm a, as the valve is operated. It

is made yielding to pass over the arm to allow the valve to be turned full on or closed. With the valve B in the position shownin Figs. 1 and 3 gas is delivered to the by-pass only, with the valve in the position illustrated in Fig. 4: the gas is cut off from all of the burners, and with the valve in the position illustrated in Fig. 5 the gas is delivered to all of the burners.

A pilot-light E is connected with a support A above the valve B. The valve of this pilot-light is preferably operated by a lever s, on the end of which is a coiled spring 8', to which the operating-chain is connected. The operating-chain is connected to the operating-chain m of the main valve so that by a pull on the operating-chain m the pilot-light is turned on, and by continuing the pull the by-pass of the single burner is then connected with the supply of gas, and when the pull is further continued the gas is turned on to all of the burners. The pilot-light is provided with a spring-valve, so that it will automatically close or partially close when the tension on the operating-chain is released.

This structure of pilot is preferably the same as that described in my Patent No. 696,640. The coiled spring .9 is of sufficient strength to overcome the tension of the valve-spring. It, however, permits a continued pull on the operating-chain and compensates for any difference in movement of the valve-levers and permits the adjustment of the valve so that the pilot-light may be operated first. The operating-chain n is secured to the opposite end of the lever B, and when it is desired to close the valve a pull on the same will first out off the supply of gas from the main passage. This brings the by-pass stop in contact with the arm ct. If the pull is continued, the stop will yield and pass over the arm and the supply of gas will be cut off from all the burners. This stop is of very great utility, as it locates the valve in proper position for the desired result. Without the stop there is danger of a careless operators leaving the valve so that there is an escape of gas, which is of course very objectionable.

From the above it will be seen that all of the burners may be used or a single burner only, as desired.

In the modified structure shown in Fig. 6 the by-pass stop is a spring-pin C, which is adapted to yield sufficiently to allow it to pass over the arm, the operation being the same as in the principal views.

I have illustrated and described my improved cluster-burner gas-lamp in the form preferred by me on account of its simplicity and economy in manufacture and convenience in use. I am aware, however, that it is capable of considerable variation in structural details without departing from my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a gaslamp, the combination of a plurality of burners; a valve for controlling the admission of gas to said burners adapted to be adjusted to admit the gas to one or more of said burners, as desired; yielding adjustment-stops for said valve; means for operating said valve; a pilot-light for igniting said burners; a valve for controlling the admission of gas to said pilot-light; means for holding said pilotvalve normally toward the closed position; means for operating said pilot-light valve; and connections between the operating means for said valves, whereby the pilot-light valve will be first opened and the pilot-light valve will close when the tension is released, coacting for the purpose specified.

2. In a gas-lamp, thecombination of a plurality of gas-burners; a valve adapted to be adjusted to admit gas to all or to one of said burners, as desired yielding adjustmentstops for said valve; means for operating said Valve; a pilot-light for igniting said burners; a valve for controlling the admission of gas to said pilot; means for operating said pilotvalve; and connections between the operating means of said valves, ooacting for the purpose specified.

3. In a gas-lamp, the combination ofa hollow central bracket; a plurality of burners; projecting arms on said bracket for supporting said burners; a valve for controlling the admission of gas to said burners, adapted to be adjusted to admit the gas to one or to all of the burners; an adjustment-stop for said valve consisting of a yielding pin adapted to engage one of said arms as the valve is manipulated, coacting for the purpose specified.

In witness whereof Ihave hereunto set my hand and seal in the presence of two witnesses.

ALFRED H. HUMPHREY. [L. 8.]

Witnesses:

A. J. ALBER, OTIS A. EARL. 

